Process for the selective separation of vinylidene olefins from mixtures with other olefins
US4822911A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1987 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Sep 25, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C69/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the selective separation of certain vinylidene olefins from their mixtures with linear olefins and for the preparation of valuable alkyl esters of acrylic acid, which comprises steps for PA1 (a) contacting and reacting a liquid phase C.sub.6 to C.sub.30 olefin feedstock mixture containing both one or more ethyl- and higher alkyl-branched vinylidene olefins and one or more linear olefins with one or more reactive agents selected from the group consisting of alkyl esters of acrylic acid at a temperature of between about 40.degree. and 200.degree. C. and in the presence of a catalytically effective amount of one or more ene reaction catalysts, to selectively convert all or part of the ethyl- and higher alkyl-branched vinylidene olefins of said feedstock mixture to higher carbon number acrylic acid esters and to produce a product mixture comprising the resulting higher acrylic acid esters and unreacted olefins, and PA1 (b) terminating step (a) and separating the unreacted olefins from said product mixture. The process is of particular benefit in the separation of mixtures of vinylidene olefins and linear alpha-olefins which result from processes for the preparation of hig…
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